TWI485626B - 整合型指紋感測器暨導航裝置 - Google Patents

整合型指紋感測器暨導航裝置 Download PDF

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TWI485626B
TWI485626B TW100119395A TW100119395A TWI485626B TW I485626 B TWI485626 B TW I485626B TW 100119395 A TW100119395 A TW 100119395A TW 100119395 A TW100119395 A TW 100119395A TW I485626 B TWI485626 B TW I485626B
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fingerprint
navigation device
user
fingerprint sensor
fingerprint sensing
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TW201207743A (en
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Gregory Lewis Dean
Richard Alexander Erhart
Jaswinder Jandu
Anthony Russo
Erik Thompson
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Synaptics Inc
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    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
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    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
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    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
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    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0338—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03543—Mice or pucks
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    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
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    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03549—Trackballs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/033—Indexing scheme relating to G06F3/033
    • G06F2203/0336—Mouse integrated fingerprint sensor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/033—Indexing scheme relating to G06F3/033
    • G06F2203/0338—Fingerprint track pad, i.e. fingerprint sensor used as pointing device tracking the fingertip image

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Description

整合型指紋感測器暨導航裝置
本發明與指紋感測器和導航裝置相關，特別是與整合指紋感測器暨導航裝置的器械和方法相關。
諸如指向裝置(例如滑鼠、觸控板、軌跡球、指標鼠等等)、按鈕、搖桿及方向板或方向按鈕的導航裝置在今日之電子裝置上日益常見，後者包括電腦、行動電話、個人數位助理、音樂播放器、計算器及其他採用圖形使用者介面的裝置。此類導航裝置可讓使用者能夠在電子裝置之圖形使用者介面上的畫面、圖示、頁面、線條、檔案、資料夾、視窗、標籤之間轉換定位。然而，隨著電子裝置的持續縮小及其功能組合的不斷擴大，此類裝置上的可用空間日益變得稀缺。因此，許多電子裝置需要小巧但依然合乎工效學原理且方便使用的導航裝置。
存取控制亦是現代電子裝置的一項重要考量，這是因為此類裝置儲存隱私、敏感或機密資訊的能力在不斷提高。儘管可重複使用的密碼或許是在裝置上驗證和辨識使用者的最常用方法，人們也在開發其他方法來對抗也許能夠擊敗可重複使用密碼的種種途徑。舉例來說，指紋感測器就是辨識和驗證使用者的可能方法之一。如同多種其他生物測定學特徵，指紋是基於一項無法更改的個人特徵。然而，指紋感測器或其他生物測定學裝置可能也需要佔用寶貴的表面空間，方能在當今多種電子裝置上採用。
有鋻於此，為了節省諸如電腦、行動電話、個人數位助理、音樂播放器、視訊播放器、計算器、導航電子產品(即GPS裝置)等等當今電子裝置上的寶貴表面空間，人們需要將導航裝置與指紋感測器整合的器械和方法。理想地說，整合的指紋感測器和導航裝置將易於使用且採用目前市售或在開發的先進指紋感測器。正如本專利申請書將清楚闡明，依照本發明的器械和方法將以精致的方式提供此等解決方案。
本發明的開發係出於因應有關技術的當前狀態，特別是因應有關技術中尚未由現有指紋感測器和導航裝置所完全解決的問題和需求。因此，本發明的開發是為提供整合指紋感測器暨導航裝置的新穎器械和方法。由下面的描述和後附的申請專利範圍，以及任何已提出的後補申請專利範圍或修訂，或者可透過如下闡明之本發明的實踐而了解，本發明的特徵與優點將會變得更加顯而易見。
如前所述，在本發明的第一實施例中揭露的一種器械包括一不導電基層，提供使用者能夠在其上按指紋的第一表面。在該不導電基層之第一表面相對的第二表面上施加一指紋感測電路。該指紋感測電路能夠透過該不導電基層感測指紋。與該不導電基層為鄰(例如在其下)放置一能夠由使用者透過該不導電基層操縱的導航裝置。
在本發明的第二實施例中揭露的一種器械包括一不導電基層，提供使用者能夠在其上按指紋的第一表面。在該不導電基層之第一表面相對的第二表面上施加一指紋感測電路。該指紋感測電路能夠透過該不導電基層感測指紋。在該不導電基層上安裝一能夠由使用者操縱的導航裝置。
在本發明的第三實施例中揭露的一種器械包括一用於在圖形使用者介面上導航的導航裝置。在該導航裝置的一表面上疊加一不導電基層。該不導電基層包括按使用者指紋的第一表面。在該不導電基層之第一表面相對的第二表面上施加一指紋感測電路；該指紋感測電路能夠透過該不導電基層感測指紋。
在本發明的第四實施例中揭露的一種器械包括一不導電基層，提供使用者能夠在其上按指紋的第一表面。在該不導電基層之第一表面相對的第二表面上施加一感測器電路，以感測按在該第一表面上的指紋。該感測器電路進一步設定為透過偵測該第一表面上的指紋脊寬度來偵測手指施加於第一表面上的壓力。
顯而易見，正如於此之插圖所描述和展示，本發明的部件能夠用範圍廣大的不同架構安排和設計。因此，以下對依照本發明之器械和方法的實施例之更詳細說明，如插圖中所表現，並非意圖限制本發明所申請的範圍，而僅代表依照本發明目前已考慮之實施例的特定範例。目前描述的實施例將透過參照圖示而最佳理解；其中相似的零件用相似的編號在各處指明。
參見圖1，在一些特選實施例中，一可供依照本發明之某器械和方法使用的指紋感測電路10可包括一指紋感測區12以感測在其上掃過的指紋。手指14的虛線外框顯示為附加在指紋感測區12之上，以便大體了解指紋感測區12之可能實施例的尺寸和比例。對於不同的應用，指紋感測區12的尺寸和形狀可視需要改變。
在某些實施例中，指紋感測區12可包括多個傳送元件16的一陣列，例如傳送元件16的一線性陣列，以在指紋掃過指紋感測區12的過程中協助掃描「點素」的線條。在此實施例中，傳送元件16顯示為與一指紋感測積體電路18連接之多根導電條痕16的一線性陣列。傳送元件16未按比例畫出且可能包括跨指紋寬度排列的數百傳送元件16，每個點素有一傳送元件16。指紋影像可透過在手指掃過此陣列時逐行掃描點素線條而產生。這些線條於是可組合成指紋影像，與使用逐行掃描產生傳真影像的方式相似。
在某些實施例中，傳送元件16設定為逐個順序發送(或快衝)探測信號。該探測信號可包括多個探測脈衝的快衝，例如方波的快衝。此探測信號可在一接收元件20的接收端上感測。與傳送元件16相似，接收元件20顯示為與指紋感測積體電路18連接的一導電條痕20。儘管所示為單個接收元件20，在其他一些實施例中，多對接收元件20可用來以差分方式消除噪音。
在接收元件20處，可因應探測信號而產生回應信號。回應信號的幅度可取決於多個因素，例如指紋感測區12上是否存在手指，特別是在某傳送元件16和接收元件20之間的空隙22上是否剛好有指紋的脊或谷。在接收元件20處產生的回應信號之幅度可與該傳送元件16和接收元件20之間的空隙22上手指之脊或谷的射頻阻抗直接相關。
透過採用單個接收元件20(或少數幾個接收元件20)和相對數目較大的傳送元件16，與接收元件20連結的接收器可設計為具有很高的品質和很好的動態範圍，超過使用多個接收元件的陣列所可能取得的效果。此設計與許多常規指紋感測器不同；後者可能採用單個太傳送元件和多個接收元件與多個接收器的大陣列。然而，於此描述的器械和方法並不限於所展示的傳送器與接收器設計。的確，於此揭露的器械和方法所使用的指紋感測器可以採用小數目的傳送元件和相對大數目的接收元件，採用大數目的傳送元件和相對小數目的接收元件，或者採用大體相等數目的傳送元件和接收元件。
如圖1所示，指紋感測區12(包括傳送元件16和接收元件20)可能與指紋感測積體電路18電連接但實際分離。將感測元件16和20定位於矽晶片之外，或可減小感測器的靜電放電、磨損及破碎可能性，從而改善指紋感測電路10的可靠性。如此亦可按照傳統的晶片縮小路線圖，讓指紋感測電路10的成本隨時日而降低。此架構與直接接觸感測器(整合到矽晶片上的感測器)相比有一明顯優點，因為直接接觸感測器不能收縮到比行業標準指紋寬度更小。然而，本發明的某些實施例可能適合常規直接接觸感測器。
在依照本發明的某些實施例中，與傳送元件16之第一陣列為鄰提供了傳送元件24之第二陣列。此傳送元件24之第二陣列可與第二接收元件26通訊。如圖1所示，在某些實施例中，第二接收元件26可與第一接收元件20電連接。在某些實施例中，傳送元件24之第二陣列可與傳送元件16之第一陣列合用，以在手指掃過指紋感測區12時確定其速度。傳送元件16與傳送元件24的兩個陣列共同構成一雙線成像器。第二陣列掃描的指紋線條資料可與第一陣列掃描的指紋線條資料比較，從而確定手指的速度。此速度測量值可用於產生準確的無變形指紋影像。
參見圖2A，其中展示了依照本發明之某指紋感測器20的一實施例。如圖所示，該指紋感測器20包括一柔軟的不導電基層22，後者有一電路面24和一感測面26。一指紋感測電路，例如圖1中所示之指紋感測電路10，可用任何適用的平版印刷方法或施加方法印刷或以其他方式黏附到基層22的電路面24上。指紋感測電路10可用任何適用方法與柔軟基層22接合，例如採用覆晶薄膜製程。指紋感測電路10的指紋感測積體電路18和指紋感測區12係出於展示目的而顯示於基層22的電路面24上。使用者可將手指掃過基層22之感測面26上的指紋感測區12，從而掃描指紋。
在某些實施例中，基層22係使用商品名為Kapton的市售柔軟聚醯亞胺材料製造。在某些實施例中，基層22的厚度大約介於25至100微米之間。Kapton聚合物使得指紋感測器20可以施加在諸如觸控板和模製塑膠等具有多種形狀和輪廓的產品上，同時提供出眾的耐用性和可靠性。然而，本發明的實施例並不限於這種基層22，亦可包括其上適合施加電路的其他柔性或剛性基層22。
基層22之電路面24上的指紋感測電路10並不限於圖1中展示的電路10。舉例來說，潛在可用的其他指紋感測電路在題為「刷動孔隙電容式指紋檢測系統和方法」之美國專利第7,146,024號中揭露；該專利由援引而收入於此。依照本發明實現指紋感測電路的其他資訊可見於題為「手指位置感測方法與器械」之美國專利公告第2005/0244038號和題為「指紋感測組件與製作方法」之美國專利公告第2006/0083411號；均亦由援引而收入於此。這些引文揭露了潛在可與於此揭露之整合型指紋感測器暨導航裝置合用的指紋感測電路，並不代表詳盡的清單。的確，本發明的某些實施例可與多種不同類型的指紋感測電路合用，這在某些情況下包括常規直接接觸指紋感測電路。
圖2A中所展示之指紋感測器20的一個益處，在於使用者的手指將與指紋感測電路10相互絕緣。也就是說，使用者的手指是在基層22的感測面26而非電路面24上掃過。在手指掃過基層22的感測面26時，電路面24上的感測元件16、20、24、26(未示出)能夠偵測到電容的改變。因此，基層22可將使用者的手指與指紋感測電路10電絕緣和實際隔離，從而提供對靜電放電和機械磨擦的一定程度防護。
參見圖2B，在另一實施例中，依照本發明的一指紋感測器20可包括夾在一起的幾個層22a和層22b，或曰基層22a和基層22b。舉例來說，在一實施例中，指紋感測電路10可印刷或用其他方式附加到第一不導電基層22a上。基層22a可包括多種適合接納導電線路的柔性或剛性基層材料。在某些實施例中，基層22a和指紋感測電路10用常規印刷電路板的形式提供。
第二不導電層22b或基層22b可放在第一層22a之指紋感測電路10的上面。舉例來說，一柔軟的聚醯亞胺層22b，例如一Kapton層22b，可用來覆蓋指紋感測電路10(顯示為指紋感測積體電路18和指紋感測區12)，由此將指紋感測電路10夾在層22a和層22b之間。
如要讀取指紋，使用者的手指可以掃過層22b的感測面26而不會直接觸及指紋感測電路10。指紋感測電路10可被視為在基層22b的電路面24上，因其與後者接觸。因此，使用者的手指可與指紋感測電路10電絕緣和實際隔離。在手指掃過層22b的感測面26時，感測元件16、20、24、26(未示出)能夠透過偵測電容的改變而讀取使用者的指紋。
參見圖3，在一些特選實施例中，依照本發明的一指紋感測器20，例如在圖2A或圖2B中展示的感測器20，可透過一電子裝置外殼32中的一開口30而暴露，例如電腦、行動電話、個人數位助理、音樂播放器、計算器、導航裝置或其他採用圖形使用者介面之裝置的外殼。如此就允許使用者讓手指34在指紋感測器20的感測面26上掃過。在某些實施例中，指紋感測區12透過開口30向使用者暴露，讓指紋感測器20的其餘部分在電子裝置內得到封閉和保護。在一些特選實施例中，柔軟基層22可被彎曲，從而由開口30中突起以形成駝峰36，然而其他形狀亦屬可能。此駝峰形狀在指紋掃過處給基層22提供了附加的剛度(由於其圓拱的形狀)，此外亦提供了使用者易於感知(即看見、感到等等)的一突起面36。此駝峰形架構在電子裝置上只佔用很小的空間。此駝峰形狀(即凸起形狀)僅作為示例提供，並非意圖限制。在其他一些實施例中，暴露的指紋感測區12乃是平坦或甚至凹下的。
如前所述，許多電子裝置使用某种導航裝置，例如滑鼠、觸控板、軌跡球、指標鼠、按鈕、開關、搖桿、轉輪、方向板、或其組合。導航裝置可讓使用者在圖形使用者介面上的畫面、圖示、頁面、線條、檔案、資料夾、視窗、標籤之間轉換定位。這些導航裝置通常需要使用電子裝置上日益變得稀缺的可用空間。因此，依照本發明將導航裝置與指紋感測器20整合乃是對有關技術的提升。
參見圖4，在依照本發明的某些實施例中，一導航裝置40，例如一選擇裝置40，可定位在指紋感測器20下面，例如在與圖3關聯而描述之駝峰36下面。就此描述而言，選擇裝置40可包括用於觸發電子裝置上某事件或控制其某些方面的按鈕、開關、感測器、按鍵或其他機關。在某些實施例中，選擇機關40設定為感測沿單一方向42的移動，因此如同電子部件中常用的許多按鈕、開關、按鍵或感測器那樣工作。在某些實施例中，選擇裝置40讓使用者能夠選擇或點按圖示、頁面、線條、檔案、資料夾、視窗、標籤等等，因此與電腦滑鼠的左按鈕功能相似。
參見圖5，在其他一些實施例中，諸如搖桿50或其他方向導航裝置50或感測器50的一導航裝置50可定位在指紋感測器20下面。此裝置50可允許使用者沿向前方向52a和(或)向後方向52b推壓裝置50而朝著一個或多個方向52a和方向52b移動。舉例來說，裝置50可讓使用者能夠在圖形使用者介面上的文件或項目清單內上下捲動，或者允許使用者在圖形使用者介面上四處移動游標或指針。
在某些實施例中，導航裝置50允許有限數目的不連接移動(例如向前、向後、向左、向右，並且可能有對角移動)。在其他一些實施例中，導航裝置50讓使用者能夠選取數目幾乎無限的位置，例如像類比搖桿一樣啟用360度移動。在某些實施例中，導航裝置50亦可允許使用者沿向下方向52c按壓導航裝置50(與圖4之選擇裝置40相似)，點按或選取某個項目、影像或物件(與滑鼠上的左按鈕相似)。
在某些實施例中，導航裝置50在受到沿方向52a和方向52b推壓時，會圍繞某個點或某條軸線轉動。在其他一些實施例中，導航裝置50會沿方向52a和方向52b橫向平移而不滾動或繞軸轉動。
參見圖6，在某些實施例中，多個導航裝置60(例如圖4和圖5中展示的那些裝置)可定位在指紋感測器20下面。舉例來說，一中央裝置60a可定位在指紋感測器20的中心或其附近之下，而兩個週邊裝置60b和60c可定位在指紋感測器20之下該中央裝置60a兩側。透過沿方向62a和方向62b移動中央裝置60a，即可使用中央裝置60a上下捲動或移動游標。在另一方面，只需沿向下方向62c和62d分別按壓兩個週邊裝置60b和60c，即可用這兩個週邊裝置向左或向右移動游標。在一些特選實施例中，沿向下方向62e按壓中央裝置60a，即可點按或選取某個項目；這與滑鼠上左按鈕的功能相似。
在其他一些實施例中，兩個週邊裝置60b和60c可設定為讓使用者可以上下捲動或移動圖形使用者介面上的游標；方法為沿方向62a和62b移動裝置60b和60c，就如同中央裝置60a一樣。在指紋感測器20下面使用多個導航裝置60的多種其他架構和變化均為可能且屬於本發明的範圍。
參見圖7A，在一些特選實施例中，諸如凸塊、凹窩、缺口、槽、脊、低陷、邊框之類的一觸覺特徵70可在指紋感測區12(在此例中為駝峰36)或其附近形成於或納入到指紋感測器20的一個表面。使用者可用此觸覺特徵70確認導航裝置72在指紋感測器20下面的位置，以及協助使用者找到或返回「原始」位置。這可提供與標準英文鍵盤之F鍵和J鍵上凸塊相似的功能。在某些行動電話上，如果指紋感測器20位於該裝置的背面且在面對螢幕時用於導航，因此使用者看不到感測器20和手指，則觸覺特徵70可能有用。在此應用中，觸覺特徵70可幫助透過觸摸而非查看來定位使用者的手指。
觸覺特徵70可設計成足夠小，從而不會干擾或只是最小地干擾指紋感測器20的感測能力。因此，觸覺特徵70可定位在指紋感測區12的前緣或後緣，在影像或速度感測部件之間或遠離這些部件，或者在對感測干擾最小的位置。在一些特選實施例中，使用者只需把一手指放在觸覺特徵70上，然後沿適當方向移動導航裝置72，即可推動裝置72。在其他一些實施例中，如圖7B所展示，觸覺特徵70定位在外殼32上指紋感測區12附近。
參見圖8A，在其他一些實施例中，指紋感測器20可疊加或納入到一按鈕、搖桿、指標鼠或其他指向裝置(下稱「導航裝置」80)。此導航裝置80可感測沿一個或多個方向的移動。在此實施例中，感測器20的指紋感測區12可疊加、附加或以其他方式納入到導航裝置80的一頂面上。在某些實施例中，指紋感測器20的其餘部分可附加在某電子裝置的外殼32上或封閉於其內。
導航裝置80可設計為具有任何適用形狀。圖8A顯示指紋感測器20順應導航裝置80的一大體平坦表面，因而提供一大體平坦的指紋感測區12。圖8B顯示指紋感測器20順應導航裝置80的一凹下表面，因而提供一凹下的指紋感測區12。此等實施例可允許指紋感測區12順應手指34的自然輪廓。圖8C顯示指紋感測器20順應導航裝置80的一凸起表面，因而提供一凸起的指紋感測區12。圖8B和圖8C所示的凹下和凸起形狀因前面揭露的柔軟基層22而成為可能。在使用由手指掃過矽晶片的常規直接接觸感測器時，此等形狀或許不可能。此等凹下和凸起形狀亦可向使用者提供觸覺回饋，從而得知手指相對於指紋感測區12的位置。
導航裝置80最好具有足夠的表面空間以容納指紋感測區12和使用者指紋的掃過。由於基層22可用諸如Kapton聚合物等柔軟材料製作，即使在基層22已同時附加到外殼32和導航裝置80的那些實施例中，柔軟基層22仍可允許導航裝置80相對於外殼32移動。
參見圖9，在某些實施例中，導航裝置90伸長的形狀可容納指紋的整個寬度。此形狀提供足夠的表面區域以允許使用者在導航裝置90上掃過其手指，同時對於當今多種電子裝置來說依然足夠小巧。導航裝置90亦可設定為感測沿多個方向的移動。
舉例來說，使用者沿方向92a和方向92b推壓導航裝置90，即可上下捲動或移動圖形使用者介面上的游標。使用者可沿向下方向96按壓導航裝置90的末端94a而向右捲動或移動游標，或者沿向下方向96按壓導航裝置90的相反末端94b而向左捲動或移動游標。沿向下方向96按壓導航裝置90的中心98，亦可將導航裝置90用作一選擇裝置(與滑鼠的左按鈕相似)。多種其他架構和變化亦為可能且屬於本發明的範圍。
參見圖10，在其他一些實施例中，一指紋感測器20可完全整合到諸如指標鼠、按鈕、搖桿之類的導航裝置100內。隨著積體電路的繼續收縮和用較小的封裝提供增加的功能，依照本發明的某指紋感測器20可部分或完全納入某導航裝置100內。一接口或互連可用於允許指紋感測器20與導航裝置100外部的某處理器或其他電路通訊。
此實施例不僅縮小指紋感測器20的底座面積，而且可提供多項製造優點。製造商或可在單一裝置內生成導航裝置和整合的指紋感測器20，因此減少或消除將指紋感測器20納入現有導航裝置100的需要。在其他一些實施例中，與其說提供兩個分開的部件，導航裝置100和指紋感測器20可作為便於在電子裝置內安裝的一個模組單元而提供。
參見圖11，在其他一些實施例中，一指紋感測器20可與諸如方向板110或方向按鈕110等導航裝置110整合。方向板110因為便於用拇指或其他手指操縱且能夠沿多個方向導航，已由當今眾多電子部件採納。沿不同方向移動方向板110，可使方向板110如同搖桿或可按壓的蓋板按鈕一樣工作。方向板110可為數位或類比裝置。
將指紋感測器20與方向板110整合的益處之一，在於大多數方向板110都至少有一根手指的寬度。因此，方向板110可提供足夠的表面空間以與指紋感測器20成功整合。在其他一些實施例中，一指紋感測器20可與一觸控板110整合，例如透過將指紋感測器20疊加到觸控板110上。
參見圖12，在其他一些實施例中，一指紋感測器20可與諸如iPod「點觸輪」120的導航裝置或與之相像的其他導航裝置整合。此類導航裝置120讓使用者可透過用手指圍繞該輪滑動或按壓該輪下不同位置處的多個按鈕，在圖形使用者介面上導航。舉例來說，點觸輪120可圍繞輪120的外周有若干個按鈕且在輪120的中心處或其附近有一按鈕，均可透過在輪120上施加壓力而推動。
在一些特選實施例中，指紋感測器20可疊加在點觸輪120之全部或部分上(或於其下提供)，以感測使用者的指紋且由此控制對與輪120連接之裝置(例如一iPod)的存取。如同與圖11關聯而描述的方向板110，大多數點觸輪120都至少有一根手指的寬度，因此可提供足夠的表面空間以與指紋感測器20成功整合。與之相似，在一些特選實施例中，如同在點觸輪120上一樣，可將符號、文字或影像印刷、壓印、雕刻在指紋感測器20上。應該認識到，導航裝置並不只限於點觸輪120，還可包括與之相像的其他類型導航裝置。
參見圖13，在另一實施例中，依照本發明的一指紋感測器20可設定為偵測施加在其某表面上的壓力。舉例來說，再次參見圖3中的指紋感測器20；使用者可將手指掃過諸如駝峰36的一暴露表面36。倘若使用者在表面36上施加相對較輕的壓力，則感測器20可偵測到該使用者指紋上相對較窄的脊130。
反之，倘若使用者施加較重的壓力，該使用者指紋之脊132就可能在表面36上被壓平。在這種情況下，感測器20可能偵測到較寬的脊132。此功能可用來確定使用者是否是輕輕掃過手指，還是在施加額外的壓力，就如同使用者在輕點或按壓表面36時所可能發生。透過偵測輕點或增加的壓力，此功能或可允許指紋感測器20具有觸控板的功用。舉例來說，輕點可用於點選圖形使用者介面上的項目、圖示或影像，因此與滑鼠左按鈕的工作方式相似。
參見圖14，在一些特選實施例中，諸如一光感測器140的導航裝置可安裝在指紋感測器20下面。在此等實施例中，基層22可用某种透明或半透明材料製作，以允許光線通過。當手指34在指紋感測器20上走過時，光感測器140可連續取得手指34的影像，以追蹤其移動。此手指移動於是可以轉換成螢幕或圖形使用者介面上游標的移動。
參見圖15，在其他一些實施例中，與其將導航裝置安放在指紋感測器20下面，諸如一開關、按鈕或其他適用導航裝置之類的一導航裝置142，可直接安裝在指紋感測器20上。在某些實施例中，可在基層22上為這些導航裝置142提供附加的條痕。導航裝置142可安裝在基層22的電路面24上或感測面26上。舉例來說，如圖15所示，一可由使用者操作的微動開關142就安裝在感測器20的感測面26上。在其他一些實施例中，一微動開關142可安裝在感測器20的電路面24上。此等微動開關142能夠透過偵測基層22之感測面26上電容的改變而動作。
應該認識到，指紋感測區12內的感測元件16、20、24、26(例如圖1中展示的雙線成像器)可不加變動地用於除指紋影像資料外亦產生導航資料。也就是說，由指紋感測電路10產生的影像資訊可用於確定手指掃過指紋感測區12的速度和方向。利用與指紋影像重建相似的方法，速度估計可推廣為用於辨識手指沿任何方向的運動，包括上下左右。該等速度估計值於是可轉換成螢幕上游標的運動，從而啟用裝置上的導航能力。此導航能力亦可與其他導航裝置組合，例如前面已討論之安裝在基層22上面或下面的開關或按鈕，從而提供全功能導航，包括與滑鼠按鈕相似的點選。
亦應認識到，在某些實施例中，來自圖4至圖15中所描述導航裝置的輸出可通過指紋感測積體電路18發送。因此，指紋感測積體電路18可設定為不只處理指紋資料，也處理收到的來自一個或多個導航裝置的資料。這可允許將指紋感測器20的作業和導航裝置的作業用多種不同方式綁在一起。舉例來說，操縱諸如開關或按鈕的導航裝置能夠令指紋感測器20甦醒和認識到指紋感測區12上有一手指。與之相似，操縱某導航裝置可令指紋感測器20休眠或關閉。將導航資料經由指紋感測器20發送亦可允許指紋感測器20行使對導航裝置的掌控。舉例來說，在使用者得到指紋感測器20驗證前，指紋感測器20能夠禁止對導航裝置的使用。上述僅為如何將指紋感測器20與導航裝置之功效綁在一起的少數幾個示例。在本發明的其他一些實施例中，導航資料可經由分開的電路發送，例如經由專用的導航電路，而非經由指紋感測積體電路18。
在一些特選實施例中，指紋感測積體電路18的一根或多根引線可用於處理指紋資料或導航資料。舉例來說，通常與一感測元件16、24連接以接收點素資料的某根引線，在某些實施例中可與諸如開關或按鈕的導航裝置連接。指紋感測積體電路18於是可透過檢查來自該開關或按鈕而收到的點素資料，確定該開關或按鈕是否接通或切斷。以此方式，通常用於接收指紋資料的引線亦可用於接收導航資料(反之亦然)，因此提高指紋感測積體電路18的多用性。在其他一些實施例中，指紋感測積體電路18上可提供一根或多根專用引線，以接收和處理來自一個或多個導航裝置而收到的資料。
本發明可用其他具體形式實施而不背離其精神或基本特徵。於此所描述之示例應在所有方面視為展示性而非限制性。因此，本發明的範圍由後附之申請專利範圍而非前面描述指明。處於申請專利範圍之等同含義和範圍的所有變化均由申請專利範圍涵蓋。
10．．．指紋感測電路
12．．．指紋感測區
14、34．．．手指
16．．．傳送元件
18．．．指紋感測積體電路
20．．．接收元件
20．．．指紋感測器
22、22a、22b．．．不導電基層
22．．．空隙
24．．．電路面
24．．．傳送元件
26．．．接收元件
26．．．感測面
30．．．開口
32．．．電子裝置外殼
36．．．駝峰
40、50、60、72、80、90、100、110、120、142．．．導航裝置
42、52a、52b、52c、62c、62d、92a、92b、96．．．方向
60a．．．中央裝置
60b、60c．．．週邊裝置
70．．．觸覺特徵
94a、94b．．．末端
36．．．表面
98．．．中心
130、132．．．脊
140．．．光感測器
為了讓本發明的優點便於理解，將透過參照附圖中展示的特定範例，對前面簡要描述的本發明做出更詳細的說明。須知，這些圖示僅描述了本發明的典型示例，因此不應視為對其範圍的限制；本發明的附加特徵與細節將透過利用附圖得到進一步描述和解釋，其中：
圖1是一指紋感測電路之一個實施例的高層級方塊圖；
圖2A是一指紋感測器之一個實施例的透視圖，該感測器包括在一不導電基層上的一指紋感測電路；
圖2B是一指紋感測器之另一個實施例的透視圖，該感測器包括夾在不導電基層之間的一指紋感測電路；
圖3是整合到一電子裝置外殼內的一指紋感測器之一個實施例的剖面圖；
圖4是依照本發明定位在一指紋感測器下面且感測沿單一方向移動的一導航裝置之一個實施例的剖面圖；
圖5是依照本發明定位在一指紋感測器下面且感測沿多個方向移動的一導航裝置之一個實施例的剖面圖；
圖6是依照本發明之一個實施例的透視圖，該實施例包括定位在一指紋感測器下面的多個導航裝置；
圖7A是定位在一指紋感測器上一觸覺特徵下面的一導航裝置之一個實施例的透視圖；
圖7B是在一指紋感測器附近置於一電子裝置外殼上的一觸覺特徵之一個實施例的透視圖；
圖8A是疊加在一導航裝置上具有一大體平坦輪廓的該指紋感測區之一個實施例的剖面圖；
圖8B是疊加在一導航裝置上具有一凹下輪廓的一指紋感測區之一個實施例的剖面圖；
圖8C是疊加在一導航裝置上具有一凸起輪廓的一指紋感測區之一個實施例的剖面圖；
圖9是疊加在一導航裝置上的一指紋感測器之另一個實施例的透視圖；
圖10是整合到一導航裝置內的一指紋感測器之另一個實施例的透視圖；
圖11是整合到或疊加在一方向板或按鈕上的一指紋感測器之一個實施例的透視圖；
圖12是整合到一諸如「點觸輪」之導航裝置內的一指紋感測器之一個實施例的透視圖；
圖13是一能夠偵測輕點或壓力增加的指紋感測器之一個實施例的剖面圖；
圖14是依照本發明定位在一指紋感測區下面的一導航裝置(在此例中為一光感測器)之一個實施例的剖面圖；以及
圖15是定位在一指紋感測區上或附近的一導航裝置(在此例中為一微動開關)之一個實施例的剖面圖。
12．．．指紋感測區
18．．．指紋感測積體電路
20．．．指紋感測器
22．．．不導電基層
24．．．電路面
26．．．感測面

Claims (5)

  1. 一種使用者裝置，包含：一裝置框具有一外殼，該外殼包含一內表面和一外表面；一開口延伸穿過該外殼的該外表面；一使用者輸入導航裝置延伸穿過該開口；一非導電可撓性基板覆蓋於該使用者輸入導航裝置的一上表面，該非導電可撓性基板提供一第一表面供一使用者施加一生物識別物件，及相對於該第一表面的一第二表面，在該第二表面上施加一生物識別物件影像感測裝置，其包含複數個生物識別物件影像感測組成線路，該等生物識別物件影像感測組成軌跡包含複數條訊號發射線之一及至少一訊號接收線，形成一電容間隙生物識別物件影像感測畫素組成陣列，及至少一訊號發射線與複數條訊號接收線構成該電容間隙生物識別物件影像感測畫素組成陣列；及該第一表面鄰接該外殼的該內表面，且該第二表面鄰接該使用者輸入導航裝置的該上表面。
  2. 如申請專利範圍第1項所述之使用者裝置，其中該生物識別物件包括一使用者的手指。
  3. 如申請專利範圍第1項所述之使用者裝置，其中該生物識別物件影像包括一使用者的指紋。
  4. 如申請專利範圍第1項所述之使用者裝置，其中該使用者輸入導航裝置包括一圖形使用者介面指向裝置。
  5. 如申請專利範圍第1項所述之使用者裝置，更包含一控制器固定於該非導電可撓性基板的該第二表面上，相對於待第一 表面且鄰接該外殼的該內表面，且與位於該非導電可撓性基板的該第二表面上的該等生物識別物件影像感測組成線路電性連接。
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US20110298711A1 (en) 2011-12-08
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